Francis alpha cothias



UNITED STATES PATENT OFFICE.

FRANCIS ALPHA OOTHIAS, OF IVRY-PORT, FRANCE.

-ALLOY.

SPECIFICATION forming part of Letters Patent No. 586,116, dated July 13, 1897.

Application filed April 2,1897. Serial No. 680,445. (No specimens.) Patentedinl'ranoe June 2, 1896,110- 256,852; in Belgium 11 30,1896,No.122,223; in England June 30, 1896, No. 14,479; in Austria J l 31, 1896, No. 46/614423 in Italy July 31,1896,1\To. 42,221,- in Luxemburg Jul 31, 1896,110. 2,582, and in Spain July 31, 1896, No. 19,417.

To all whom it may concern:

Be it known that I,FRANc1s ALPHA COTHIAS a citizen of the Republic of France, residing at 9 Rue Victor Hugo, Ivry-Port, Seine, in the Republic of France, have invented certain new and useful Improvements in Alloys, of which the following is a full, clear, and exact specification.

The invention has been patented in France, No. 256,852, dated June 2, 1896; in Belgium, No. 122,223, dated June 30, 1896; in Austria, No. 46/3,442, dated July 31, 1896; in Italy, No. 42,221, dated July 31, 1896; in Luxemburg, No. 2,582, dated July 31, 1896; in England, No. 14,479, dated June 30, 1896, and in Spain, No. 19,417, dated July 31, 1896.

The invention forming thesubject of this application relates to a new metallic alloy and process of making the same.

This alloy has considerable tensile strength, the resisting force being as high as thirtyfive kilograms per square millimeter of section. It can be soldered and worked with the greatest case. It consists of a mixture in given proportions of copper, tin, zinc, and aluminium, to which I add chlorid of ammonia and phosphorus in the state of salt.

The composition of this alloy is as follows: copper, forty grams; tin, two hundred grams; zinc, three hundred and sixty grams; aluminium, four hundred grams. Total, one thousand grams. An alloy in these proportions and prepared in the manner hereinafter described, with additions of hydrochlorate of ammonia and phosphides, is especially adapted for the casting of very light pieces of machinery, having at the same time a great resisting force. (Its density is below 4.5.) Pieces of this kind maybe obtained from this alloy completely finished on leaving the mold.

To manufacture this alloy, I proceed in the following manner: I begin by putting into a crucible the required quantities of copper and tin, and I let them melt together. In this Way I obtain a first alloy of copper and tin, to which I add the necessary quantity of zinc. Then I let the whole mass melt together once more. When the mass is completely molten, I let it cool down until it becomes pasty. I then add the required proportions of aluminium, which immediately heightens the temperature of the mass, and finally I heat the mass to a very high temperature. The substances are hereby combined in the most complete manner, and I obtain a perfectly-homogeneous alloy. In order to facilitate the combination of the various elements and reduce the oxids that form at every melting, I add during the last manipulation about a kilogram of chlorid of ammonia per one thousand kilograms of alloy. I add also during the last manipulation a small quantity of phosphorus in order to give to the alloy an easier flow and greater fluidity. The phosphorus can be used in the state of salt. The salts are phosphides of titanium, of manganese,

Wolfram, tungsten, &c., which further intanium, manganese, Wolfram, tungsten, &c.)

are added to the mixture in the state of salts (chiefly in the state of phosphides) either during the last melting or during the remelting of the ingot performed after the first casting and taking of the samples.

The alloy obtained in the way described above is fusible at a temperature below 800 centigrade. It is sufficient to heat it in kettles in the open air, exactly like lead or tin, neither furnaces nor crucibles being required.

This alloy molds itself perfectly in metal molds.

I claim The herein-described alloy consisting of copper forty parts; tin two hundred parts; zinc three hundred and sixty partsand aluminium four hundred parts.

In witness whereof I have hereunto set my hand in presence of two witnesses.

FRANCIS ALPHA COTHIAS.

Witnesses: I

EMILE BERT, EDWARD P. MAOLEAN. 

